A tunnel advanced geological prediction endoscope

Abstract

The present invention relates to the technical field of geological advanced prediction equipment, and relates to a tunnel advanced geological prediction endoscope, which includes a probe and a lead wire connected to the tail of the probe. A detection part is arranged at the front end of the probe, and a drilling part is arranged at the tail, so that when the drilling part rotates, the probe can be driven to move in the direction of the lead wire. When the tunnel advanced geological prediction endoscope of the present invention is in use, when the probe gradually penetrates into the drilled detection hole and the internal environment of the hole is photographed through the endoscope, the geological environment in the hole can be detected. If the detection hole collapses, the drilling part rotates to push away the collapsed soil, thereby forming a passage for the endoscope to pass through. That is to say, when the endoscope cannot be withdrawn from the detection hole, a new passage can be formed through the drilling of the drilling part, so that the endoscope can be taken out smoothly.

Description

Technical Field

[0001] The present invention relates to the technical field of geological advance prediction equipment, and more particularly, to a tunnel advance geological prediction endoscope. Background Art

[0002] Geological advance prediction in tunnel construction is an important technical means to detect the geological conditions ahead before excavation, predict potential risks (such as faults, karst caves, water inrush, etc.), so as to optimize the construction plan and ensure safety. The prediction methods of the prior art all need to be combined with complex algorithms, and have relatively high requirements for construction quality and equipment. The endoscope method can directly capture the internal situation of the formation through a camera, which is more intuitive and simple. The specific method includes the following steps: First, select a suitable position to drill a hole, and then place the endoscope into the drilled detection hole to capture the situation inside the detection hole.

[0003] However, the detection hole may collapse after the endoscope enters it, especially in some broken and loose formations. When the detection hole collapses, the endoscope of the prior art can only be taken out of the detection hole by forced pulling. This may cause the entire device to be damaged by pulling, and even the endoscope may not be retrievable. Summary of the Invention

[0004] The purpose of the present invention is to provide a tunnel advance geological prediction endoscope, which can escape through the drilling part to avoid being unable to be taken out when the detection hole collapses.

[0005] The embodiments of the present invention are achieved by the following technical solutions:

[0006] A tunnel advance geological prediction endoscope includes a probe and a lead wire connected to the tail of the probe; a detection part is arranged at the front end of the probe and a drilling part is arranged at the tail, so that when the drilling part rotates, it can drive the probe to move in the direction of the lead wire;

[0007] The probe is further provided with a central rod; the drilling part is rotatably arranged at one end of the central rod; the detection part is arranged at the other end of the central rod; the detection part includes a locking mechanism, a sliding sleeve and a detector; a chute is arranged on the surface of the central rod along its length direction; the sliding sleeve is provided with a sliding block in cooperation with the chute, so that the sliding block is embedded in the chute and can slide along the chute; the locking mechanism includes a lead screw, a locking motor and a plurality of locking rods; the plurality of locking rods are distributed around the sliding sleeve and hinged to the sliding sleeve, so that the plurality of locking rods can swing to protrude from the outer wall of the sliding sleeve or be received inside the sliding sleeve; a transmission tooth is arranged on each of the plurality of locking rods; the lead screw is arranged between the plurality of locking rods and meshed with the transmission teeth of the plurality of locking rods, so that when the lead screw rotates, the plurality of locking rods can be opened or tightened; the lead screw is connected to the locking motor; the detector is arranged at the front end of the sliding sleeve;

[0008] A tension spring is further arranged between the detection part and the central rod, so that the tension spring tightens the central rod and the detection part.

[0009] Further, one end of the central rod is provided with a connection end for connecting the lead wire; the drilling part includes a drill bit and a plurality of excitation coils; the plurality of excitation coils are arranged around the connection end; the drill bit is tubular and sleeved outside the connection end; a permanent magnet is arranged on the inner wall of the drill bit in cooperation with the plurality of excitation coils, so that the drill bit rotates when the excitation coils are electrified.

[0010] Further, a rotating cylinder is further included; the rotating cylinder is rotatably sleeved outside the connection end; the plurality of permanent magnets are arranged on the inner wall of the rotating cylinder; the drill bit is sleeved outside the rotating cylinder and fixed to the rotating cylinder by screws.

[0011] Further, a guiding cylinder is further included; the guiding cylinder is fixedly sleeved on the outer wall of the central rod, and a gap for the sliding sleeve to extend into is reserved between the guiding cylinder and the outer wall of the central rod.

[0012] Further, the drill bit is conical and the outer wall is spiral.

[0013] Further, the detection part is provided with a receiving groove for receiving the locking rods; a dust-proof cloth is wrapped outside the locking rods; the dust-proof cloth blocks the gap between the locking rods and the receiving groove.

[0014] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0015] When the tunnel advanced geological prediction endoscope of the present invention is in use, when the probe gradually penetrates into the drilled detection hole and the internal environment of the hole is photographed through the endoscope, the geological environment in the hole can be detected. If the detection hole collapses, the drilling part rotates to push away the collapsed soil, thereby forming a passage for the endoscope to pass through. That is to say, when the endoscope cannot be withdrawn from the detection hole, a new passage can be formed by the drilling of the drilling part, so that the endoscope can be taken out smoothly.

[0016] When the drill bit rotates, in order to prevent the entire probe from rotating, a locking rod is provided. When several locking rods open, they can be embedded inside the hole wall, thereby preventing the entire probe from rotating and enabling the drill bit to effectively advance forward. The detection part and the central rod are tightened by a tension spring, making the overall length shorter and facilitating storage. When the drill bit operates, the detection part is fixed to the hole wall through the locking rod. As the drill bit continuously drills, the tension spring is stretched. Subsequently, when the locking rod retracts, the separation between the detection part and the hole wall can be achieved, and then under the action of the tension spring, the detection part moves towards the central rod, which also makes the entire probe move a certain distance towards the outside of the hole. Repeating this process multiple times can get the probe out of trouble. At the same time, the sliding sleeve and the central rod cooperate to make the sliding between the detection part and the central rod more stable and reliable.

[0017] The excitation coil is arranged at the connection end, so that the drill bit can be set as a hollow structure, which is convenient for the lead wire to be led out from the center of the drill bit and is more conducive to getting out of trouble. A permanent magnet is arranged inside the rotating cylinder, which can be combined with several excitation coils to form a motor structure, thereby driving the drill bit to rotate. At the same time, the drill bit is fixed to the rotating cylinder by screws, making the drill bit convenient for disassembly and maintenance. The setting of the guiding cylinder ensures that the sliding sleeve and one end of the drill bit will not enter the sediment during the sliding process, ensuring smooth sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an internal schematic diagram of the tunnel advanced geological prediction endoscope of the present invention.

[0019] Figure 2 It is a schematic diagram of the retracted locking rod.

[0020] Figure 3 For Figure 1 The enlarged view of a at

[0021] Figure 4 It is a schematic diagram of the probe normally entering the detection hole.

[0022] Figure 5 It is a schematic diagram of the probe getting out of trouble through the drill bit.

[0023] Reference numerals: 1 - lead wire, 2 - central rod, 3 - lead screw, 4 - locking motor, 5 - locking rod, 6 - transmission gear, 7 - detector, 8 - sliding sleeve, 9 - tension spring, 10 - connection end, 11 - excitation coil, 12 - permanent magnet, 13 - rotating cylinder, 14 - guide cylinder, 15 - drill bit, 16 - chute, 17 - detection hole. Detailed implementation mode

[0024] As Figures 1-5 shown, this embodiment provides a tunnel advanced geological prediction endoscope, which includes a probe and a lead wire 1 connected to the tail of the probe. The lead wire 1 is a wire harness, and its interior includes a power line and a control line. In order to enhance the strength of the lead wire 1, a metal wire or the like can also be wrapped on the outside. The front end of the probe is provided with a detection part and the tail is provided with a drilling part, so that when the drilling part rotates, it can drive the probe to move in the direction of the lead wire 1. Specifically, a detector 7 is arranged inside the probe, which includes a camera, a light source and other sensors. The endoscope is already a mature technology and will not be described in detail in the specification. The drilling part includes a drill bit 15, which is arranged at the tail of the probe. The drill bit 15 is generally conical and the outer wall is arranged in a spiral shape, which makes the tip easy to enter the rock and soil. At the same time, the spiral shape makes it similar to a screw and can gradually enter the interior of the rock and soil during rotation. The drill bit 15 can also be of other types as long as it can drill through the rock and soil.

[0025] When the tunnel advanced geological prediction endoscope of the present invention is in use, when the probe gradually penetrates into the drilled detection hole 17 and the internal environment of the hole is photographed through the endoscope, the geological environment inside the hole can be detected. If the detection hole 17 collapses, the drilling part rotates to push away the collapsed soil, thereby forming a passage for the endoscope to pass through. That is to say, when the endoscope cannot be withdrawn from the detection hole 17, a new passage can be formed by the drilling of the drilling part, so that the endoscope can be taken out smoothly.

[0026] In this embodiment, the probe is provided with a central rod 2. As Figure 2As shown, the drilling part is rotatably arranged on the center rod 2. The detection part includes a locking mechanism, a sleeve 8 and a detector 7. The sleeve 8 is slidably sleeved on the outside of the center rod 2. In order to prevent the center rod 2 from rotating relative to the detection part when the drill bit 15 rotates, a slide groove 16 is provided on the surface of the center rod 2 along its length direction. The sleeve 8 is provided with a slider in cooperation with the slide groove 16, so that the slider is embedded in the slide groove 16 and can slide along the slide groove 16 without rotating. The locking mechanism includes a screw 3, a locking motor 4 and a plurality of locking rods 5. The plurality of locking rods 5 are distributed around the sleeve 8 and are hinged to the sleeve 8, so that the plurality of locking rods 5 can swing to protrude from the outer wall of the sleeve 8 or be accommodated in the sleeve 8. The plurality of locking rods 5 are all provided with transmission teeth 6. The screw 3 is inserted between the plurality of locking rods 5 and meshes with the transmission teeth 6 of the plurality of locking rods 5, so that the rotation of the screw 3 can drive the plurality of locking rods 5 to open or tighten. The screw 3 is connected to the locking motor 4. The locking motor 4 drives the screw rod 3 to rotate, thereby opening or tightening the locking rods 5. The detector 7 is arranged at the front end of the sliding sleeve 8.

[0027] When the drill bit 15 rotates, in order to prevent the entire probe from rotating, a locking rod 5 is provided. A plurality of locking rods 5 are opened to be embedded in the hole wall, thereby preventing the entire probe from rotating, so that the drill bit 15 is effectively pushed forward.

[0028] At the same time, the detection part is fixed to the hole wall by the locking rod 5. As the drill bit 15 continues to drill, the detection part and the drill bit 15 gradually move away from each other. Subsequently, the locking rod 5 is tightened and the detection part moves toward the drill bit 15. This causes the entire probe to move out of the hole by a moving distance. Repeating the above actions several times can complete the escape.

[0029] In order to facilitate the detection part to approach the drill bit 15, a tension spring 9 is also provided between the detection part and the center rod 2, so that the tension spring 9 tightens the center rod 2 and the detection part. The detection part and the center rod 2 are tightened by the tension spring 9, so that the overall length becomes shorter, which is convenient for storage. When the drill bit 15 is in motion, the detection part is fixed to the hole wall by the locking rod 5. As the drill bit 15 continues to drill, the tension spring 9 is stretched. Subsequently, the locking rod 5 is retracted to separate the detection part from the hole wall, and then the detection part is moved toward the center rod 2 under the action of the tension spring 9, so that the entire probe moves a certain distance outside the hole. Repeating this process several times will get you out of trouble.

[0030] In this embodiment, a connection end 10 for connecting the lead wire 1 is provided at one end of the center rod 2. The drilling part includes a drill bit 15 and a plurality of excitation coils 11. The plurality of excitation coils 11 are arranged around the connection end 10. The drill bit 15 is tubular and is sleeved on the outside of the connection end 10. The inner wall of the drill bit 15 is provided with a permanent magnet 12 for each of the excitation coils 11 so that the drill bit 15 rotates when the excitation coils 11 are energized. The cooperation principle of the excitation coil 11 and the permanent magnet 12 is the same as that of the motor, and will not be repeated in the specification.

[0031] The excitation coil 11 is arranged at the connection end 10, so that the drill bit 15 can be set as a hollow structure, which is convenient for the lead wire 1 to be led out from the center of the drill bit 15, and is more conducive to getting out of trouble. Otherwise, the lead wire 1 can only be led out from the side of the probe, and then a protruding part is formed on the surface of the probe, which is not convenient for the probe to be taken out from the rock and soil.

[0032] In this embodiment, a rotating cylinder 13 is further included. As Figure 3 shown, the rotating cylinder 13 is rotatably sleeved outside the connection end 10. A plurality of permanent magnets 12 are arranged on the inner wall of the rotating cylinder 13. The drill bit 15 is sleeved outside the rotating cylinder 13 and fixed to the rotating cylinder 13 by screws.

[0033] The permanent magnets 12 arranged inside the rotating cylinder 13 can be combined with a plurality of excitation coils 11 to form a motor structure, thereby driving the drill bit 15 to rotate. At the same time, the drill bit 15 is fixed to the rotating cylinder 13 by screws, making the drill bit 15 convenient for disassembly, installation and maintenance. In practice, the rotating cylinder 13 can be fixedly arranged on the central rod 2 so that it can only rotate and cannot be disassembled. Only the drill bit 15 can be disassembled and replaced.

[0034] In this embodiment, a guiding cylinder 14 is further included. The guiding cylinder 14 is fixedly sleeved on the outer wall of the central rod 2, and a gap for the sliding sleeve 8 to extend into is reserved between the guiding cylinder 14 and the outer wall of the central rod 2. So that the sliding sleeve 8 can just enter and exit this gap. The arrangement of the guiding cylinder 14 makes it impossible for the sliding sleeve 8 and one end of the drill bit 15 to enter the sediment during the sliding process, ensuring the smoothness of the sliding. At the same time, the outer diameter of the largest end of the drill bit 15 is greater than the outer diameter of the guiding cylinder 14, and the outer diameter of the guiding cylinder 14 is greater than the outer diameter of the sliding sleeve 8. This makes the outer diameter of the probe gradually decrease from the drill bit 15 to the detector 7 end. That is to say, after the drill bit 15 drills and passes through, all the subsequent components can pass through more smoothly. Thereby ensuring the effect of getting out of trouble.

[0035] In this embodiment, the detection part is provided with a receiving groove for receiving the locking rod 5. The locking rod 5 is wrapped with a dust-proof cloth. The dust-proof cloth blocks the gap between the locking rod 5 and the receiving groove. The setting of the dust-proof cloth is the same as the principle and structure of the dust-proof cloth around the gear lever of an automobile. This makes it impossible for sediment to enter the gap, thereby preventing the locking rod 5 from being stuck.

Claims

1. A tunnel advanced geological prediction endoscope, characterized by: It comprises a probe and a lead wire connected to the tail of the probe; the front end of the probe is provided with a detection part and the tail end is provided with a drilling part, so that when the drilling part rotates, it can drive the probe to move in the direction of the lead wire; The probe is also provided with a center rod; the drilling part is rotatably arranged at one end of the center rod; the detection part includes a locking mechanism, a sliding sleeve and a detector; the sliding sleeve is slidably sleeved on the outside of the other end of the center rod so that the detection part can slide relative to the center rod; the surface of the center rod is provided with a sliding groove along its length direction; the sliding sleeve is provided with a slider in cooperation with the sliding groove so that the slider is embedded in the sliding groove and can slide along the sliding groove; the locking mechanism includes a screw rod, a locking motor and a plurality of locking rods; a plurality of the locking rods are distributed around the sliding sleeve and hinged to the sliding sleeve so that a plurality of the locking rods can swing to protrude from the outer wall of the sliding sleeve or be accommodated inside the sliding sleeve; a plurality of the locking rods are provided with transmission teeth; the screw rod is passed through a plurality of the locking rods and meshes with the transmission teeth of a plurality of the locking rods so that the rotation of the screw rod can drive a plurality of the locking rods to open or tighten; the screw rod is connected to the locking motor; the detector is arranged at the front end of the sliding sleeve; A tension spring is also arranged between the detection part and the center rod, so that the tension spring can tighten the center rod and the detection part.

2. The tunnel advanced geological prediction endoscope according to claim 1 is characterized in that: One end of the center rod is provided with a connection end connected to the lead wire; the drilling part includes a drill bit and a plurality of excitation coils; the plurality of excitation coils are arranged around the connection end; the drill bit is tubular and is sleeved on the outside of the connection end; the inner wall of the drill bit is equipped with a permanent magnet on the plurality of excitation coils so that the drill bit rotates when the excitation coil is energized.

3. The tunnel advanced geological prediction endoscope according to claim 2 is characterized by: It also includes a rotating cylinder; the rotating cylinder is rotatably sleeved on the outside of the connecting end; a plurality of permanent magnets are arranged on the inner wall of the rotating cylinder; the drill bit is sleeved on the outside of the rotating cylinder and fixed to the rotating cylinder by screws.

4. The tunnel advanced geological prediction endoscope according to claim 3 is characterized by: It also includes a guide cylinder; the guide cylinder is fixedly sleeved on the outer wall of the center rod, and a gap is reserved between the guide cylinder and the outer wall of the center rod for the sliding sleeve to extend into.

5. The tunnel advanced geological prediction endoscope according to claim 4 is characterized in that: The drill bit is conical and the outer wall is arranged in a spiral shape.

6. The tunnel advanced geological prediction endoscope according to claim 5 is characterized by: The detection part is provided with a receiving groove for receiving the locking rod; the locking rod is wrapped with a dustproof cloth outside; the dustproof cloth covers the gap between the locking rod and the receiving groove.

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